Modified field oriented control for smooth torque operation of a BLDC motor

Lazor, Marek; Štulrajter, Marek

doi:10.1109/elektro.2014.6847897

Cited by 34 publications

(13 citation statements)

References 6 publications

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“…In this section, we apply identification technique to the motor modeling while controlling the current and the angular velocity using Park's reference frame in order to simplify regulation as found in [31][32][33][34].…”

Section: Online Estimation Approach 321 Preliminary Processmentioning

confidence: 99%

Parameters estimation of BLDC motor based on physical approach and weighted recursive least square algorithm

Majdoubi

Masmoudi

Bakhti

et al. 2021

IJECE

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Brushless DC motors (BLDCM) are widely used when high precision converters are required. Model based torque control schemes rely on a precise representation of their dynamics, which in turn expect reliable system parameters estimation. In this paper, we propose two procedures for BLDCM parameters identification used in an agriculture mobile robot’s wheel. The first one is based on the physical approach or equations using experimentation data to find the electrical and mechanical parameters of the BLDCM. The parameters are then used to elaborate the model of the motor established in Park’s reference frame. The second procedure is an online identification based on recursive least square algorithm. The procedure is implemented in a closed-loop scheme to guarantee the stability of the system, and it provide parameter matrices obtained by transforming electrical equations, established in Parks reference frame, and mechanical equation to discrete-time domain. From these matrices, and using well formulated intermediate variables, all desired parameters are deduced simultaneously. The identification procedures are being verified using simulation under Matlab-Simulink software.

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Section: Online Estimation Approach 321 Preliminary Processmentioning

confidence: 99%

Parameters estimation of BLDC motor based on physical approach and weighted recursive least square algorithm

Majdoubi

Masmoudi

Bakhti

et al. 2021

IJECE

View full text Add to dashboard Cite

show abstract

“…The concentrated stator winding results in three trapezoidal shaped back-EMF's (e a , e b , e c ). From the figure, the corresponding time-domain model in the abc stationary reference frame is established (retrieved from [36]):…”

Section: Appendix B Bldc Motor Model In the Rotating Reference Framementioning

confidence: 99%

“…Using the Park transformation (A24) on (A5), the model is transformed into the stationary dq reference frame (as shown in [36]…”

Section: Appendix B Bldc Motor Model In the Rotating Reference Framementioning

confidence: 99%

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High-Bandwidth Active Impedance Control of the Proprioceptive Actuator Design in Dynamic Compliant Robotics

2019

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Dynamic compliant robotics is a fast growing field because of its ability to widen the scope of robotics. The reason for this is that compliant mechanisms may ensure safe/compliant interactions between a robot and an external element-for instance, a human operator. Active impedance control may widen the scope even further in relation to passive elements, but it requires high-bandwidth robust torque and active impedance control which induces high-noise issues even if high-end sensors are used. To address these issues, a complete controller design scheme, including Field-Oriented Control (FOC) of a Brushless Direct Current (BLDC) motor, is proposed. In this paper, controller designs for controlling the virtual impedance, motor torque and field are proposed which enables high-bandwidth robust control. Additionally, a novel speed and angle observer is proposed that aims to reduce noise arising in the angle sensor (typically a 12-bit magnetic encoder) and a Kalman/Luenberger based torque observer is proposed that aims to reduce noise arising in the phase current sensors. Through experimental tests, the combination of the controller designs and observers facilitated a closed-loop torque bandwidth of 2.6 kHz and a noise reduction of 13.5 dB (in relation to no observers), at a sample rate and Pulse Width Modulation (PWM) frequency of 25 kHz. Additionally, experiments verified a precise and high performing controller scheme both during impacts and at a variety of different virtual compliance characteristics.

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“…This paper studies the vibration and power consumption improvement of the AFE System motor with a field oriented control (FOC) instead of its current trapezoidal controller based on the power quality improvement. There are also some studies about the advantages of the FOC technique [15][16][17] and torque ripple resulting from trapezoidal control [18,19], however vibration as a measure has not been considered nor the two techniques compared for a PMSM motor control. These studies have taken the modelling and theoretical approaches, instead of the experimental approach.…”

Section: Introductionmentioning

confidence: 99%

Field Oriented Control-Based Reduction of the Vibration and Power Consumption of a Blood Pump

et al. 2020

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Power quality and energy efficiency are of great importance in motor control. The motor of any medical device needs to have a smooth torque and minimal vibration in order to maximise its energy efficiency and patient comfort. Furthermore, in rotary blood pumps, excessive energy wasted due to vibration is converted into uncontrolled movement of the mechanical parts and thus could reduce the life of the motor-pump. Besides mechanical or hydraulic origin, one of the causes of vibration in any pump is torque ripple resulting from motor phase commutation. In this paper, using relevant equipment, two extreme scenarios were examined for vibration and electrical efficiency comparison due to power quality in a blood pump: one trapezoidal control with a trapezoidal phase current output; the other a field oriented control (FOC) with a non-distorted sinusoidal phase current. The test motor-pump was the Arteriovenous Fistula Eligibility (AFE) System that is used prior to haemodialysis. The trapezoidal technique was implemented utilising the Allegro a4941 fan driver (Allegro Microsystem, 2012), and the FOC technique was implemented using the Texas Instrument digital signal processor (TMS320F28335). The aim was to reduce the energy wasted over vibration, and to achieve smooth operation of the AFE System. Vibration was measured with a one-axis accelerometer; results showed considerably lower vibration due to less current ripple associated with the FOC control as well as lower power consumption.

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Modified field oriented control for smooth torque operation of a BLDC motor

Cited by 34 publications

References 6 publications

Parameters estimation of BLDC motor based on physical approach and weighted recursive least square algorithm

Parameters estimation of BLDC motor based on physical approach and weighted recursive least square algorithm

High-Bandwidth Active Impedance Control of the Proprioceptive Actuator Design in Dynamic Compliant Robotics

Field Oriented Control-Based Reduction of the Vibration and Power Consumption of a Blood Pump

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